"Now, that of course runs against my grain!...as I like to think of myself as something more than our Sheltie, with his tummy-clock at feeding-time! LOL"
Thanks, and I agree with that sentiment. Human behaviour and perception may ultimately be reducible to neurochemical phenomena, but I certainly believe that the totality of human experience at the physical and psychological levels is far greater and richer than the sum of the parts, whatever those parts may be.
There is a whole sub-discipline of researchers examining nutrition-brain interactions, and its increasingly obvious that diet not only determines physical well being, but most definitely neuronal well being as well.
I try to focus on getting the essential amino acid pre-cursors into my system, which I rarely can get through my normal diet (which too often consists of a coffee and muffin for lunch!
I am experimenting with choline and tryptophan supplements, and definitely notice a change in my overall motivation and mental energy levels....